A. While it’s amusing to imagine the jazz legend singing “What a Wonderful World” while casually returning a backhand, Satchmo was not known for his tennis prowess.

The culmination of a five-year enhancement project, the $600 million “Louis II” replaced another stadium of the same name, which the U.S.T.A. reconfigured when the U.S. Open relocated to Flushing Meadows in 1978.

The U.S.T.A.’s contract with the club was ending the following year, and several other cities, including Charlotte, N.C., and Louisville, Ky., tried to convince the organizers to relocate.

But the tournament remained in Queens, moving just a few miles north, to Flushing Meadows.

As the story goes, when the new U.S.T.A. president, a Mississippi oilman named William “Slew” Hester, flew into La Guardia Airport in early 1977, he noticed an abandoned stadium among the snowy confines of Flushing Meadows Park.

Known as the Singer Bowl when it opened for the 1964/65 World’s Fair, the arena had hosted a range of high-caliber events in its short life, including several U.S. qualifiers for the 1964 Tokyo Olympics, and the 1968 New York Rock Festival, which featured the Who, the Jimi Hendrix Experience and the Doors.

Fast forward to a few years later: The U.S.T.A. only had about 18 months to prepare Flushing Meadows for its first U.S. Open, so it had to cut some corners. It simply split the existing stadium in two: the smaller part became known as the Grandstand. (It was also recently demolished and rebuilt.)

The larger retained the Armstrong name and served as the event’s premier court until 1997, when Arthur Ashe Stadium, which honors the first black U.S. Open champion, made its debut.